Singular and Plural

Phenomenon is the singular of - Phenomena

Datum is the singular of - Data

Medium is the singular of - Media

Memorandum is the singular of - Memos

Curriculum is the singular of - Curricula

Gymnasium is the singular of - Gymnasia

Spectrum is the singular of - Spectra

Stadium -is the singular of  Stadia

Referendum is the singular of - Referenda

Microorganism is the singular of - Microorganisms

Proviso is the singular of - Provisos

Alumna is the singular of - Alumnae

Antenna is the singular of - Antennae

Analysis is the singular of - Analyses

Hypothesis is the singular of - Hypotheses

Parenthesis is the singular of - Parentheses

Diagnosis is the singular of - Diagnoses

Thesis is the singular of - Theses

Vertebra is the singular of - Vertebrae

Formula is the singular of - Formulas

Larva is the singular of - Larvae

Erratum is the singular of - Errata

Ultimatum is the singular of - Ultimatums

Aquarium is the singular of - Aquaria

Tariff is the singular of - Tariffs

Forum is the singular of - Forums

Maximum is the singular of - Maxima

Medium is the singular of - Media

Premium is the singular of - Premiums

Novum is the singular of - Novi

Minimum is the singular of - Minima

Premium is the singular of - Premiums

Ultimatum is the singular of - Ultimatums

Perpetuum is the singular of - Perpetua

Memorandum is the singular of - Memos

Infinium is the singular of - Infinia

Graffito is the singular of - Graffiti

Carnivore is the singular of - Carnivores

Proviso is the singular of - Provisos

Hippopotamus is the singular of - Hippopotami

Aquarium is the singular of - Aquaria

Oasis is the singular of - Oases

Radius is the singular of - Radii

Memorandum is the singular of - Memos

Alumna is the singular of - Alumnae

Stimulus is the singular of - Stimuli

Phenomenon is the singular of - Phenomena

Maximum is the singular of - Maxima